Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Greywolf Psychiatry Services, Inc

Psychiatric/Mental Health Nurse Practitioner in Kapolei, HI · enumerated 2014 · authorized official Cynthia Greywolf, Nurse Practitioner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821406943

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Registry record

Entity type Organization (Type 2)

Legal business name Greywolf Psychiatry Services, Inc

Practice address 91-1019 Kamaaha Ave, 1004, Kapolei, HI, 96707

Phone (603) 380-4500

Fax (603) 658-2679

Enumeration date Aug 1, 2014

Last updated in NPPES Aug 1, 2014

Taxonomy & classification

363LP0808X Psychiatric/Mental Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1454 (HI) Primary

Authorized official

Name Cynthia Greywolf

Title Nurse Practitioner

Phone (603) 380-4550

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is Greywolf Psychiatry Services, Inc?

Greywolf Psychiatry Services, Inc is registered in NPPES as a Psychiatric/Mental Health Nurse Practitioner (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-01.